w42.eu
Things mj41 runs and builds for fun, for family and friends.
s.i41.euproof of concept
An open-source home platform, local first and privacy first: your robots, devices and apps work at home, and the online part only helps. The first device is M5Stack's Stackchan robot, with apps you approve for it: a pet for kids, a focus timer, a dashboard of every sensor and the robot for your own programs and AI agents.
mcbot.w42.euproof of concept
Minecraft robots that play vanilla survival on their own: wood, tools, a shelter before the night, food, iron, a wheat field by the water. The goal is a robot that lives through a week of game days; every run is kept, to watch live and replay.
infinite.pm
Process modeling as readable graphs: draw how work flows, and keep the picture and the text in step.
More projects
VS Code and AI agent tooling, git tools, the Go Minecraft library and more, all on GitHub.
mc.w42.eu
A Minecraft server for family and friends, safe for very young players: whitelist only, and every player has a home cube of their own (512 × 512 blocks) where only they build and break things; in the other players' cubes they walk around and look, but cannot break, build or take anything.
A Paper server with mods of our own for the cube worlds. Every night the home cubes move around the grid, so there are new neighbours in the morning: a world rotation by our own Go tools on the go-mc26 library, with a backup before and after. Java Edition at cubes.mc.w42.eu, Bedrock (phones, tablets, consoles) at bedrock.mc.w42.eu.